A control methodology for renewable energy integrations in distribution systems

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Abstract
This paper presents a systematic control methodology for intermittent renewable energy integrations in low voltage distribution systems considering operating constraints and limits. An output feedback decentralized controller is synthesized for renewable generators using a linear quadratic robust control strategy. The change in volatile renewable generations is considered as an uncertain term in the design algorithm. The designed controller, for both wind and photovoltaic (PV), ensures both steady state and transient voltage stability for a given integration level. Effectiveness of the proposed controller is verified on a 43 bus industrial mesh distribution system under large disturbances and it is found that the designed control scheme enhances the stability and making the renewable integration grid friendly.

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